project diesel jet drive

jimjam · 24 August 2010, 21:00

hello all.. ;-) brand new to this stuff.. have bought an aluminium 20 fthull with hypalon tubes which had a jet drive and diesel engine in.now removed.no idea what they were.so...now to make a good boat to use in tidal water/coastal use. got a jet drive from e bay 150mmdia bore and intend to fit it on the back and reinstal a diesel.so...got a bwm deep sea 21 with 230hp yanmar td in it engine is good.thought id use the engine..jet drive in it is knackered..castoldi 238. am i way out on bore size of jet drive or can it work? does anyone know? or should i downsize engine and save on fuel? any ideas or help greatfully recieved . jimjam

Nos4r2 · 24 August 2010, 22:16

Welcome to Ribnet

I was wondering whether to go and look at that BWM. What else was wrong with it apart from the jet drive?

jimjam · 25 August 2010, 09:00

hi there...drive shaft must of come lose, smashed bell housing on castoldi and ripped out raw water intake...hope they werent at sea, other than that rib is ok,good trailer, just bought it for the engine though think its a tad on the large side ;-)

ribraff · 25 August 2010, 11:46

Is it the yellow hull with blue tubes that was in the London Docklands?

Nos4r2 · 25 August 2010, 15:47

Quote:

Originally Posted by jimjam

hi there...drive shaft must of come lose, smashed bell housing on castoldi and ripped out raw water intake...hope they werent at sea, other than that rib is ok,good trailer, just bought it for the engine though think its a tad on the large side ;-)

Damn, I should have gone for it!
How much hull damage was there?

jimjam · 25 August 2010, 15:58

was in hayling island..bit of hull damage but onlya few hours work work ;-) anyone got any ideas on a 230 yanmar ith a 150mm jet drive? am i miles out on bore size ?

Rokraider · 09 September 2010, 18:13

Are you interested in selling on the BWM less the engine?
If so contact me on rokraider@mac.com